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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 8jgf | |||||||||
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| タイトル | CryoEM structure of Gq-coupled MRGPRX1 with peptide agonist BAM8-22 | |||||||||
要素 |
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キーワード | STRUCTURAL PROTEIN / itch receptor / Mas-related GPCRs / MGPRX1 | |||||||||
| 機能・相同性 | 機能・相同性情報response to chloroquine / acute-phase response / G protein-coupled receptor activity / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels ...response to chloroquine / acute-phase response / G protein-coupled receptor activity / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / transmembrane signaling receptor activity / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / GTPase binding / Ca2+ pathway / fibroblast proliferation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell surface receptor signaling pathway / cell population proliferation / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / cell surface / signal transduction / extracellular exosome / membrane / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||
| 手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.7 Å | |||||||||
データ登録者 | Sun, J.P. / Xu, H.E. / Yang, F. / Liu, Z.M. / Guo, L.L. / Zhang, Y.M. / Fang, G.X. / Tie, L. / Zhuang, Y.M. / Xue, C.Y. | |||||||||
| 資金援助 | 中国, 2件
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引用 | ジャーナル: Nat Commun / 年: 2023タイトル: Ligand recognition and G protein coupling of the human itch receptor MRGPRX1. 著者: Lulu Guo / Yumu Zhang / Guoxing Fang / Lu Tie / Yuming Zhuang / Chenyang Xue / Qi Liu / Minghui Zhang / Kongkai Zhu / Chongzhao You / Peiyu Xu / Qingning Yuan / Chao Zhang / Lei Liu / Naikang ...著者: Lulu Guo / Yumu Zhang / Guoxing Fang / Lu Tie / Yuming Zhuang / Chenyang Xue / Qi Liu / Minghui Zhang / Kongkai Zhu / Chongzhao You / Peiyu Xu / Qingning Yuan / Chao Zhang / Lei Liu / Naikang Rong / Shengxuan Peng / Yuan Liu / Chuanzheng Wang / Xin Luo / Zongyao Lv / Dongwei Kang / Xiao Yu / Cheng Zhang / Yi Jiang / Xinzhong Dong / Jiuyao Zhou / Zhongmin Liu / Fan Yang / H Eric Xu / Jin-Peng Sun / ![]() 要旨: MRGPRX1, a Mas-related GPCR (MRGPR), is a key receptor for itch perception and targeting MRGPRX1 may have potential to treat both chronic itch and pain. Here we report cryo-EM structures of the ...MRGPRX1, a Mas-related GPCR (MRGPR), is a key receptor for itch perception and targeting MRGPRX1 may have potential to treat both chronic itch and pain. Here we report cryo-EM structures of the MRGPRX1-Gi1 and MRGPRX1-Gq trimers in complex with two peptide ligands, BAM8-22 and CNF-Tx2. These structures reveal a shallow orthosteric pocket and its conformational plasticity for sensing multiple different peptidic itch allergens. Distinct from MRGPRX2, MRGPRX1 contains a unique pocket feature at the extracellular ends of TM3 and TM4 to accommodate the peptide C-terminal "RF/RY" motif, which could serve as key mechanisms for peptidic allergen recognition. Below the ligand binding pocket, the GXPFGXF/W motif is essential for the inward tilting of the upper end of TM6 to induce receptor activation. Moreover, structural features inside the ligand pocket and on the cytoplasmic side of MRGPRX1 are identified as key elements for both Gi and Gq signaling. Collectively, our studies provide structural insights into understanding itch sensation, MRGPRX1 activation, and downstream G protein signaling. | |||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 8jgf.cif.gz | 226 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8jgf.ent.gz | 171.8 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8jgf.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| 文書・要旨 | 8jgf_validation.pdf.gz | 973.6 KB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 8jgf_full_validation.pdf.gz | 984.9 KB | 表示 | |
| XML形式データ | 8jgf_validation.xml.gz | 38.4 KB | 表示 | |
| CIF形式データ | 8jgf_validation.cif.gz | 57.3 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/jg/8jgf ftp://data.pdbj.org/pub/pdb/validation_reports/jg/8jgf | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 36232MC ![]() 8jgbC ![]() 8jggC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABG
| #1: タンパク質 | 分子量: 41724.383 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト)発現宿主: ![]() |
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| #2: タンパク質 | 分子量: 38561.152 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNB1発現宿主: ![]() 参照: UniProt: P62873 |
| #4: タンパク質 | 分子量: 6375.332 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNG2発現宿主: ![]() 参照: UniProt: P59768 |
-抗体 / タンパク質・ペプチド / タンパク質 , 3種, 3分子 ELR
| #3: 抗体 | 分子量: 30363.043 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト)発現宿主: ![]() |
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| #5: タンパク質・ペプチド | 分子量: 1974.225 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) |
| #6: タンパク質 | 分子量: 35906.508 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: MRGPRX1, MRGX1, SNSR3, SNSR4発現宿主: ![]() 参照: UniProt: Q96LB2 |
-詳細
| Has protein modification | Y |
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-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
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| EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
| 構成要素 | 名称: Cryo-EM structure of the BAM8-22-bound MRGPRX1-Gq complex タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.5 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: DIFFRACTION / 最大 デフォーカス(公称値): 1200 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3次元再構成 | 解像度: 2.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 1316443 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)
中国, 2件
引用





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FIELD EMISSION GUN